Top definition
The addolecent way of saying you are a shit head.

Literal initialism = you poo poo head
Boy A: Don't go to taco bell it will give you diarhea.
Girl A: Stfu I love taco bell
Boy A: It's a really bad idea
Girl A: STFUYPPH
by Fredrick Ulysses Kingausum November 14, 2010
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